### Theory:

The number with power $$2$$ is called square, and the number with power $$3$$ is called cube. We studied this in earlier classes. Do you think the power of number can only be $$2$$ and $$3$$?

No, it's not. The power can be $$4$$, $$5$$, $$6$$, …

We read this as $$4$$ raised to the power $$2$$.
The exponent of a number shows how many times the number should be multiplied. It is written as a small number to the right and above the base number.
Powers with positive exponents
$$2 + 2 + 2 + 2 + 2 + 2 + 2$$ $$=$$ $$14$$

Here, $$2$$ repeatedly added $$7$$ times. So, this can be written as $$2 \times 7 = 14$$.

In the same way, $$2 \times 2 \times 2 \times 2 \times 2 \times 2 \times 2 = 32$$.

Here, $$2$$ repeatedly multiplied $$5$$ times. So, this can be written as $$2^5 = 32$$
Example:
$$2 = 2^1$$

$$2 \times 2 = 2^2 = 4$$

$$2 \times 2 \times 2 = 2^3 = 8$$

$$2 \times 2 \times 2 \times 2 = 2^4 = 16$$

$$2 \times 2 \times 2 \times 2 \times 2 = 2^5 = 32$$

Here, the number $$2$$ has powers $$1$$, $$2$$, $$3$$, $$4$$ and $$5$$ called positive exponents.
Important!
Positive numbers with positive exponents only have positive value.